6853391 has 2 divisors, whose sum is σ = 6853392. Its totient is φ = 6853390.

The previous prime is 6853369. The next prime is 6853409. The reversal of 6853391 is 1933586.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6853391 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6853321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3426695 + 3426696.

It is an arithmetic number, because the mean of its divisors is an integer number (3426696).

Almost surely, 2^6853391 is an apocalyptic number.

6853391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6853391 is an equidigital number, since it uses as much as digits as its factorization.

6853391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 6853391 is about 2617.8982027573. The cubic root of 6853391 is about 189.9481945556.

The spelling of 6853391 in words is "six million, eight hundred fifty-three thousand, three hundred ninety-one".